About the usage environment

This site recommends the following browsing environment.

• The latest version of Microsoft Edge
• The latest version of Google Chrome
• Firefox latest version
• The latest version of Safari

In order to use some contents on this site, plug-ins and browsing software may be required depending on the usage environment. A plug-in is an external software that expands functions that the software (browser) for viewing websites does not provide as standard.

You may need a separate PDF reader to open a PDF file.
If you do not have it, you can download it free of charge from Adobe.
Download page of Adobe Acrobat Reader DC (external site)

In order to view Microsoft Office® documents (Word®, Excel®, PowerPoint®), you may need software that supports Microsoft Office® documents such as Microsoft Office® and OpenOffice.org.